Home / 283,061.08-390,618.70-155,738.80

Finding the Fourth Proportional to 283,061.08, 390,618.70 and 155,738.80

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Solution

The fourth proportional to 283,061.08, 390,618.70 and 155,738.80 is: 214,916.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,061.08 : 390,618.70 = 155,738.80 : x
  2. Step 2: Convert to fraction form
    283,061.08/390,618.70 = 155,738.80/x
  3. Step 3: Cross multiply
    283,061.08x = 390,618.70 × 155,738.80
  4. Step 4: Simplify right side
    283,061.08x = 60,834,487,595.56
  5. Step 5: Solve for x
    x = 60,834,487,595.56/283,061.08
  6. Step 6: Final answer
    x = 214,916.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.